Johnson Controls A70HA-2 Temperature Control
$171.00
The Johnson Controls A70HA-2 is a manual-reset low-limit temperature control that opens its circuit when the temperature drops to the low-limit set point. Its 3/8″ by 3″ bulb is designed to operate on temperature through a 6-foot capillary across a 35 to 80°F range.
3 in stock
Description
- Manual Reset: Locks out until reset by hand.
- Low-Limit Action: Opens the circuit at low temperature.
- Temperature Range: Monitors a 35 to 80°F range.
- Remote Sensing: Senses via 6-foot capillary and bulb.
- Bulb Element: Withstands bulb temperatures to 250°F.
Documentation
Technical Specifications
| Manufacturer | Johnson Controls |
|---|---|
| Part Number | A70HA-2 |
| Type | Temperature Controller |
| Series | A70 |
| Switch Action | Opens on Low Temperature Manual Reset |
| Temperature | 35 to 80°F (1.7 to 27°C) |
| Bulb/Capillary | 3/8" x 3" (0.95 x 7.6 cm) bulb 6' (1.9 m) capillary |
| Bulb Temperature | 250°F (121°C) Max |
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Description
The Johnson Controls A70HA-2 is a low-limit temperature control that opens its contacts when the monitored temperature drops to the set point. As a manual-reset model, it stays tripped until reset by hand, while its two-circuit contact block transfers at set point—opening the main circuit and closing an isolated auxiliary circuit.
Its vapor-charged sensing element uses a remote 3/8" x 3" bulb on a 6 ft capillary, allowing the bulb to be mounted away from the control. Long-life, snap-acting contacts provide reliable switching, while the adjustable setpoint ranges from 35 to 80°F, and the bulb withstands temperatures up to 250°F.
Frequently Asked Questions
What does the Johnson Controls A70HA-2 do?
It is a low-limit temperature control that opens its circuit when temperature falls to the set point, then requires manual reset.
What is the temperature range of the A70HA-2?
The A70HA-2 has a setpoint range of 35 to 80°F (1.7 to 27°C) and a maximum bulb temperature of 250°F (121°C).
What sensing element does the A70HA-2 use?
It uses a 3/8" x 3" bulb on a 6-foot (1.9 m) capillary, allowing the bulb to be mounted away from the control.
